cgpanalyser.gui.chart.XYMouseMarker.java Source code

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Here is the source code for cgpanalyser.gui.chart.XYMouseMarker.java

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package cgpanalyser.gui.chart;

import java.awt.Color;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.geom.Rectangle2D;
import org.jfree.chart.plot.IntervalMarker;
import org.jfree.chart.plot.Marker;
import org.jfree.chart.plot.XYPlot;
import org.jfree.ui.Layer;

/**
 *
 * @author Vlastimil Kapusta, xkapus02@stud.fit.vutbr.cz
 */
public final class XYMouseMarker extends MouseAdapter {

    private Marker marker;
    private Double markerStart = Double.NaN;
    private Double markerEnd = Double.NaN;
    private final XYPlot plot;
    private final XYChartPanel panel;
    private boolean markerActive;
    private final Color markerColor = new Color(0xDD, 0xFF, 0xDD, 0x75);

    public XYMouseMarker(XYChartPanel panel) {
        this.panel = panel;
        this.plot = (XYPlot) panel.getChart().getPlot();
        this.markerActive = false;
        //this.dataset = plot.getDataset();
        //this.chart = panel.getChart();
    }

    @Override
    public void mousePressed(MouseEvent e) {
        markerStart = getXPosition(e);
        //System.out.println("Pressed");
    }

    @Override
    public void mouseReleased(MouseEvent e) {
        markerEnd = getXPosition(e);
        updateMarker();
        //System.out.println("Released");
    }

    @Override
    public void mouseDragged(MouseEvent e) {
        markerEnd = getXPosition(e);
        updateMarker();
    }

    private void updateMarker() {
        if (marker != null) {
            plot.removeDomainMarker(marker, Layer.BACKGROUND);
            markerActive = false;
            //System.out.println("removeDomainMarker, markerStart: " + markerStart + ", markerEnd: " + markerEnd);
        }
        if (!(markerStart.isNaN() || markerEnd.isNaN()))
            if (getMarkerEnd() > getMarkerStart()) {
                marker = new IntervalMarker(getMarkerStart(), getMarkerEnd());
                marker.setPaint(markerColor);
                plot.addDomainMarker(marker, Layer.BACKGROUND);
                markerActive = true;
                //System.out.println("addDomainMarker, markerStart: " + markerStart + ", markerEnd: " + markerEnd);
            }
    }

    private Double getXPosition(MouseEvent e) {
        Rectangle2D plotArea = panel.getScreenDataArea();
        return plot.getDomainAxis().java2DToValue(e.getPoint().getX(), plotArea, plot.getDomainAxisEdge());
    }

    /**
     * @return the markerActive
     */
    public boolean isMarkerActive() {
        return markerActive;
    }

    /**
     * @return the markerStart
     */
    public Double getMarkerStart() {
        return markerStart;
    }

    /**
     * @return the markerEnd
     */
    public Double getMarkerEnd() {
        return markerEnd;
    }

}